1-Naphthol [for Biochemical Research] TCI N0864

1-Naphthol [for Biochemical Research] from TCI, catalogue code N0864, is also known as α-naphthol. It is a phenolic compound derived from naphthalene, with a hydroxyl group at the 1-position of the ring system. The "for Biochemical Research" grade means the material is prepared for biochemical research work. TCI lists it as a supplementary product for antibody and immunochemistry work. In the laboratory, α-naphthol is a well-known reagent in several classic colour tests. It is also used in detection systems based on coupling reactions with diazonium salts.

Researchers choose this material because its electron-rich naphthalene ring reacts readily with electrophilic reagents and forms clearly coloured products. This reactivity is the basis for its use in the Molisch test for carbohydrates, the Voges–Proskauer test in microbiology, and the Sakaguchi test for arginine. In histochemistry and immunochemistry, naphthol derivatives can form coloured precipitates after reacting with diazonium salts, which lets researchers see where enzyme activity is located. Because it is a biochemical research grade, laboratories can have more confidence that their test results will be consistent from run to run.

In Indonesia, 1-naphthol is widely needed by microbiology, biochemistry, and immunochemistry laboratories. University teaching laboratories use it for practical sessions that demonstrate classic qualitative tests for carbohydrates and amino acids. Clinical and food microbiology laboratories rely on it for the Voges–Proskauer test, which is part of routine bacterial identification. Research groups working on enzyme histochemistry and antibody-based detection also keep it on hand for colour development steps.

• Molisch test for carbohydrates: α-naphthol reacts with furfural derivatives formed from carbohydrates under acidic conditions, producing a distinct coloured ring that indicates carbohydrates are present in the sample.
• Voges–Proskauer test in microbiology: 1-naphthol is a key reagent in this test for acetoin production, helping laboratories tell bacterial species apart during routine identification of microbial isolates.
• Sakaguchi test for arginine: the electron-rich naphthol ring takes part in the colour-forming reaction that detects the guanidino group of arginine, making it useful for qualitative amino acid analysis.
• Enzyme histochemistry and visualisation: naphthol compounds couple with diazonium salts to form coloured precipitates, allowing researchers to locate enzyme activity directly in tissue sections or on membranes.
• Immunochemistry support work: TCI classifies this reagent as an antibody supplementary product, so it suits colour development and detection steps that accompany antibody-based assays in research laboratories.

• Grade: for Biochemical Research

Keep 1-Naphthol in its original, tightly sealed container, away from light, moisture, and heat. Store it in a cool, dry, well-ventilated area, separate from strong oxidising agents and incompatible chemicals. Amber glass or other light-protective containers help preserve the reagent's quality. Handle it only in a well-ventilated area or a fume hood. Wear suitable gloves, safety glasses, and a laboratory coat, and do not inhale dust or let it touch the skin or eyes. Wash hands thoroughly after handling. Before use, read the Safety Data Sheet from the manufacturer, and dispose of waste according to local regulations.

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